I have Horizon Client 2103 installed on my macOS 12 Public beta 2 (I know beta) but I can't connect to my VDI trough it. It do work in Big Sur but not in macOS 12 - don't know why.
The connection to the remote computer has been closed due to unknown reason, please check log for detailed information."
Is is something that I should do in my environment (horizon view) or is this a issue because of macOS 12 beta?
Hopefully VMWare will fix this soon, but for right now what you have to do is disable System Integrity Protection in order for it to work. You can do a quick google search to figure out how to do that. Keep in mind though that that will inherently make your MacOS system less secure.
My experience was the same; found that disabling SIP for macOS & reboot did allow my local client 5.5.2 to load the desktop. So, this should be resolved shortly after OS12 is gold. In the meantime, I re-enabled SIP & rebooted. I am able to user the HTML5 Horizon client with good results. HTH others.